Resolution:
Yes you can. Using the BusinessFactor 4.1 release, you can create a map set of PNG images (with the BusinessFactor Designer) and this Map set can be used in the EventFinder.
The EventFinder uses a free software library from http://www.cs.hut.fi/~framling/JVG/ to do rendering of the PNG images in the Map area.
This software library was modified to support the rendering of  PNG images from a URL instead only from a file.
You can find the original source and modifications attached here.